Adding support for the Rackspace Open Cloud
Generate full-size SHA256 IDs for images and containers
Prevent container.Kill() from crashing if container.cmd is nil
Merge remote-tracking branch 'amesserl/raxcloud-support'

Conflicts:
	Vagrantfile
Fix missing group "Vagrant" error
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of ssh://github.com/dotcloud/docker
Skip missing images instead of failing the push
Unit tests fetch their base image with 'docker pull docker-ut'
Cleaned up UI of 'docker push'
Cleaned up error checking of 'docker push'
fixed an issue with the help history command, printed twice
fixed issue with rmi help showing help twice
Fix termcaps on the linux client
Fix termcaps on the linux client
Merge branch '18-termcap_issues-fix' of github.com:dotcloud/docker into 18-termcap_issues-fix
Updated README.md to prepare for docs merge
Cleaned up error checking of 'docker pull', to be symmetrical to 'docker push'
Improved error checking of 'docker pull' by printing body of HTTP error